Dataset supporting publication: 'GEOFIT: Ground source heat pump systems for energy efficient building retrofitting'

Dataset supporting publication: Presentation of GEOFIT at the European Heat Pump Summit (2019) Available for download: GEOFIT Zenodo The integration of geothermal systems for heating / cooling solutions in conjunction with heat pump technology is a major challenge, particularly in the case of renovation. In order to find the best solution for the increased flow temperatures compared to a new building for the renovation, various heat pump configurations are evaluated according to energy and economic criteria. A refrigerant with low greenhouse gas potential (GWP) is used as the working medium, e.g. R1234ze (E)) less than 10 used. A favorable refrigeration circuit configuration for high flow temperatures is a twin-circuit system, which essentially consists of two heat pumps with different condensing temperatures and the same evaporation temperatures. An alternative to this is a single-stage configuration with a significantly larger condenser for improved supercooling. Both systems should enable efficient operation when renovating buildings.支撑该发表成果的数据集：GEOFIT在2019年欧洲热泵峰会的演示资料，可通过Zenodo平台获取GEOFIT数据集。地热能系统与热泵技术结合的采暖/制冷方案整合工作是一项重大挑战，在建筑翻新场景中这一难题尤为突出。针对翻新建筑较新建建筑需提升供水温度的需求，为寻得最优解决方案，需依据能源与经济双重标准对多种热泵配置方案进行评估。本次研究选用温室气体潜值（GWP, Global Warming Potential）较低的制冷剂作为工质，例如R1234ze(E)，其温室气体潜值低于10。适配高供水温度的理想制冷回路配置为双回路系统，该系统主要由两台冷凝温度各异、蒸发温度相同的热泵组成。除此之外，另一替代方案为单级配置，搭配尺寸显著更大的冷凝器以实现更优异的过冷效果。两类系统均可在建筑翻新场景下实现高效运行。